Zirconium oxide filler for TFT-LCD (Thin Film Transistor Liquid Crystal Display) substrate glass feeding channel

Abstract

The invention discloses a zirconia filler for a TFT-LCD (Thin Film Transistor-Liquid Crystal Display) substrate glass feeding channel, which is prepared by mixing, magnetically separating and packaging electric melting stabilized zirconia particles and zirconia fine powder serving as main raw materials, active alpha-Al2O3 micro powder and sintered alumina micro powder serving as sintering aids and white mud and silica powder serving as plasticizers, thereby obtaining the zirconia filler for the TFT-LCD substrate glass feeding channel. The zirconium oxide filling material for the TFT-LCD substrate glass feeding channel is prepared; the zirconium oxide filler is prepared from the following raw materials in percentage by mass: 75 to 85 percent of electrically-smelted stable zirconium oxide particles, 7 to 15 percent of zirconium oxide fine powder, 4 to 8 percent of active alpha-Al2O3 micro powder and sintered aluminum oxide micro powder, and 2 to 4 percent of white mud and silicon micro powder; the content of ZrO2 + HfO2 + stabilizer in the zirconia filler is greater than 85%, the content of Al2O3 is greater than 5%, and the content of SiO2 is less than 5%. The invention has the characteristics of good thermal insulation effect, good fluidity, good plasticity, few impurities and no pollution to platinum pipelines.

Description

technical field [0001] The invention belongs to the technical field of refractory material preparation, and in particular relates to a zirconia filler for a TFT-LCD substrate glass feed channel. Background technique [0002] TFT-LCD substrate glass is an important part of the liquid crystal display device and one of the key materials in the flat panel display industry; the substrate glass produced by the melt overflow method has better surface quality and can accurately control the thickness and surface flatness of the glass substrate and warpage, so that the amount of polishing of the glass substrate is reduced to a minimum, and the manufacturing cost is low. It has become the most advanced mainstream production process in the world. chemical, temperature adjustment, and form a glass plate in the forming device; at present, the supply channel system mainly adopts the platinum channel structure, and the platinum channel needs a filling material to fix, seal and protect the p...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a zirconia filler for TFT-LCD substrate glass feed channel to solve the problem of low service life of platinum pipes caused by traditional fillers due to many impurities, large pollution, unstable structure at high temperature, etc.